Cheat finally producing nothing for drug supplier? (8)
I believe the answer is:
foxglove
'drug supplier?' is the definition.
Although both the answer and definition are singular nouns, I don't understand how they can define each other.
'cheat finally producing nothing' is the wordplay.
'cheat' becomes 'fox' (fox is a kind of cheat).
'finally' indicates one should take the final letters.
'nothing' becomes 'love' (I've seen this before).
The final letter of 'producing' is 'g'.
'fox'+'g'+'love'='FOXGLOVE'
'for' is the link.
(Other definitions for foxglove that I've seen before include "Common wild flower" , "Plant (of the genus 10 down) with bell-shaped flowers" , "Flowering plant that's source of digitalis" , "Animal and hand-covering for a plant" , "Tall plant with purple or white flowers - vulpine?" .)